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Chinese Chemical Letters 2024年第2期35卷 415-419页

作者： yufen lv Hongyu Ding Jinmao You Wei Wei Dong Yi Key Laboratory of Catalytic Conversion and Clean Energy in Universities of Shandong Province School of Chemistry and Chemical EngineeringQufu Normal UniversityQufu 273165China College of Chemistry and Chemical Engineering Shaoxing UniversityShaoxing 312000China School of Pharmacy Southwest Medical UniversityLuzhou 646000China

An additive-free and environmentally friendly strategy has been realized for the construction of S-substituted isothioureas through visible-light-induced multicomponent reaction starting fromα-diazoesters,aryl isothiocyanates,amines and cyclic *** methodology features simple operation,mild reaction conditions,favorable functional group tolerance,easily available starting materials and high efficiency.

关键词： Visible-light Additive-free Four-component reaction S-Substituted isothioureas

Recent advances in the application of sulfinic acids for the construction of sulfur-containing compounds

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Chinese Chemical Letters 2022年第1期33卷 97-114页

作者： yufen lv Huanhuan Cui Na Meng Huilan Yue Wei Wei School of Chemistry and Chemical Engineering Qufu Normal UniversityQufu 273165China Qinghai Provincial Key Laboratory of Tibetan Medicine Research and CAS Key Laboratory of Tibetan Medicine Research Northwest Institute of Plateau BiologyXining 810008China School of Chemistry and Chemical Engineering Shihezi UniversityShihezi 832000China

Sulfur-containing organic compounds display wide applications in the field of materials science,synthetic chemistry,and pharmaceutical ***,numerous synthetic strategies have been developed for the synthesis of sulfur-containing compounds in synthetic *** recent years,the utilization of sulfinic acids as versatile synthons has emerged as attractive and powerful approach to access various organosulfur compounds through sulfonylation,sulfinylation or sulfenylation *** this review,we summarized the recent progress in the construction of various sulfur-containing compounds from sulfininc *** examples of substrates and the related reaction mechanisms are described *** review intends to provide readers a comprehensive understanding on the synthesis of sulfur-containing molecules from sulfinic acids and provide help for future synthetic research.

关键词： Sulfur-containing compounds Sulfinic acids Sulfonylation Sulfinylation Sulfenylation

Visible-light-induced three-component reaction of quinoxalin-2(1H)-ones,alkenes and CF_(3)SO_(2)Na leading to 3-trifluoroalkylated quinoxalin-2(1H)-ones

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Chinese Chemical Letters 2021年第1期32卷 258-262页

作者： Na Menga yufen lv Qishun Liu Ruisheng Liu Xiaohui Zhao Wei Wei School of Chemistry and Chemical Engineering Qufu Normal UniversityQufu 273165China Qinghai Provincial Key Laboratory of Tibetan Medicine Research and Key Laboratory of Tibetan Medicine Research Northwest Institute of Plateau BiologyChinese Academy of SciencesQinghai 810008China

A facile and metal-free visible-light-enabled three-component reaction of quinoxalin-2(1 H)-ones,alkenes and CF_(3)SO_(2)Na has been developed under air at room *** photocatalytic tandem reaction using 4 CzIPN as the photocatalyst and air as the green oxidant,provides a mild and environmentally friendly approach to access a series of 3-trifluoroalkylated quinoxalin-2(1 H)-ones.

关键词： Metal-free Visible-light-catalysis Three-component reaction Quinoxalin-2(1H)-ones

Photocatalyst-free visible-light-mediated three-component reaction ofα-diazoesters, cyclic ethers and NaSCN to access organic thiocyanates

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Chinese Chemical Letters 2023年第2期34卷 198-201页

作者： Zhiwei Wang Na Meng yufen lv Wei Wei Huilan Yue Guofu Zhong School of Chemistry and Chemical Engineering Qufu Normal UniversityQufu 273165China Qinghai Provincial Key Laboratory of Tibetan Medicine Research and CAS Key Laboratory of Tibetan Medicine Research Northwest Institute of Plateau BiologyXining 810008China

A facile and environmentally friendly visible-light-induced three-component reaction of α-diazoesters,cyclic ethers and Na SCN to construct organic thiocyanates has been developed at room temperature. This reaction could occur under photocatalyst-and additive-free conditions to afford a number of organic thiocyanates with moderate to good yield and favorable functional group tolerance.

关键词： Photocatalyst-free Visible-light Three-component reaction Organic thiocyanates

Catalyst-and additive-free selective sulfonylation/cyclization of 1,6-enynes with arylazo sulfones leading to sulfonylated γ-butyrolactams

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Chinese Chemical Letters 2021年第1期32卷 136-139页

作者： Qishun Liu yufen lv Ruisheng Liu Xiaohui Zhao Jiawen Wang Wei Wei School of Chemistry and Chemical Engineering Qufu Normal UniversityQufu 273165China Qinghai Provincial Key Laboratory of Tibetan Medicine Research and Key Laboratory of Tibetan Medicine Research Northwest Institute of Plateau BiologyChinese Academy of SciencesQinghai 810008China College of Chemistry and Chemical Engineering Shenyang Normal UniversityShenyang 110034China

A convenient and regioselective sulfonylation/cyclization of 1,6-enynes with arylazo sulfones has been developed to access a series of sulfonylated γ-*** present reaction could be efficiently conducted under catalyst... 详细信息

关键词： Catalyst-free Arylazo sulfones 1,6-Enynes Sulfonylatedγ-butyrolactams

Additive-free synthesis of β-keto phosphorodithioates via geminal hydro-phosphorodithiolation of sulfoxonium ylides with P_(4)S_(10)and alcohols

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Chinese Chemical Letters 2024年第9期35卷 165-168页

作者： Jindong Hao yufen lv Shuyue Tian Chao Ma Wenxiu Cui Huilan Yue Wei Wei Dong Yi Key Laboratory of Catalytic Conversion and Clean Energy in Universities of Shandong Province School of Chemistry and Chemical EngineeringQufu Normal UniversityQufu 273165China Qinghai Provincial Key Laboratory of Tibetan Medicine Research and CAS Key Laboratory of Tibetan Medicine Research Northwest Institute of Plateau BiologyXining 810008China Green Pharmaceutical Technology Key Laboratory of Luzhou City School of PharmacySouthwest Medical UniversityLuzhou 646000China

A simple and additive-free protocol has been developed for the preparation ofβ-keto phosphorodithioates through the three-component reaction of easily available sulfoxonium ylides,P_(4)S_(10),and *** present geminal hydro-phosphorodithiolation reaction was performed at room temperature to construct a series ofβ-keto phosphorodithioates in the absence of any metal reagents,bases,or additives.

关键词： β-Keto phosphorodithioates Phosphorodithiolation Sulfoxonium ylides P_(4)S_(10) Alcohols

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热障涂层无损检测技术研究进展

中国表面工程 2019年第2期32卷 16-26页

作者：李建超何箐吕玉芬梁立康中国农业机械化科学研究院表面工程技术研究所

为提高发动机的涡轮前温度和热端部件服役寿命,热障涂层(TBCs)被广泛应用于燃气涡轮发动机。热障涂层具有多相、多界面和非均质特性,且其服役工况恶劣复杂。寻找一种可以表征涂层显微组织、缺陷、热物性、应力等反映涂层质量和剩余寿命... 详细信息

为提高发动机的涡轮前温度和热端部件服役寿命,热障涂层(TBCs)被广泛应用于燃气涡轮发动机。热障涂层具有多相、多界面和非均质特性,且其服役工况恶劣复杂。寻找一种可以表征涂层显微组织、缺陷、热物性、应力等反映涂层质量和剩余寿命的无损检测方法,对发动机的热端部件安全性和可靠性至关重要。文中综述了超声检测技术(UT)、声发射技术(AE)、红外热成像技术(IRT)、阻抗谱技术(IS)和光激发荧光压电光谱技术(PLPS)的原理以及其在热障涂层无损检测中的研究应用,并详细介绍了太赫兹时域光谱(THz-TDS)技术及其在热障涂层中的应用。最后总结了上述无损检测方法的检测能力,并对热障涂层无损检测方法进行展望。

关键词：热障涂层无损检测超声检测声发射红外热成像阻抗谱光激发荧光压电光谱太赫兹时域光谱

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溶液前驱体等离子喷涂热障涂层结构研究

热喷涂技术 2018年第3期10卷 59-64页

作者：吕玉芬黄治国王世兴何箐中国农业机械化科学研究院表面工程技术研究所北京100083 贵阳航发精密铸造有限公司贵州贵阳550014

以锆盐和钇盐水溶液为原料,采用常规等离子喷涂工艺和超音速等离子喷涂工艺制备出了均有垂直裂纹结构的SPPS热障涂层,利用扫描电镜(SEM)、显微硬度计和实验电阻炉,研究了SPPS涂层的微观结构、显微硬度及其高温热循环性能。结果表明:相... 详细信息

以锆盐和钇盐水溶液为原料,采用常规等离子喷涂工艺和超音速等离子喷涂工艺制备出了均有垂直裂纹结构的SPPS热障涂层,利用扫描电镜(SEM)、显微硬度计和实验电阻炉,研究了SPPS涂层的微观结构、显微硬度及其高温热循环性能。结果表明:相比于常规等离子喷涂,超音速等离子喷涂工艺具有更高的能量和粒子飞行速度,在相同送料速率下,喷涂距离为50mm时SPPS涂层沉积速率为前者在喷涂距离为30mm时的2.3倍,SPPS涂层沉积致密度和显微硬度也高于前者,喷涂距离对SPPS涂层微观结构影响也相对较小,采用超声速等离子喷涂可在更大工艺范围内制备出性能较好的SPPS涂层。采用常规等离子喷涂工艺和超音速等离子喷涂工艺制备的SPPS涂层分别在1100℃下热循环1270h和970h后涂层完整。

关键词：溶液前驱体等离子喷涂热障涂层微观结构

A human hybrid tracking and localization method for mixed reality simulation of complex system

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International Journal of Modeling, Simulation, and Scientific Computing 2022年第2期13卷 187-199页

作者： yufen Wu Yi lv Dawei Wang Yang Xue Shuhong Xu Beijing Aircraft Technology Research Institute Comac Beijing 102211P.R.China

In order to obtain stable and high-precision motion tracking in mixed reality(MR)simulation of the complex system,an optical-inertial hybrid tracking method is proposed,which combines the accuracy of optical motion capture equipment and the robustness of inertial motion capture equipment,and can reduce the occlusion problem of entity scene on the premise of ensuring the localization *** method has been applied to the ergonomic evaluation of large civil aircraft development processes,and the effectiveness and usability of the method have been verified.

关键词： Complex system simulation motion tracking optical-inertial fusion mixed reality scene

A mixed reality simulation evaluation method for complex system

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International Journal of Modeling, Simulation, and Scientific Computing 2022年第2期13卷 200-214页

作者： Lijun Wang Yang Xue Yi lv yufen Wu Dawei Wang Shuhong Xu Beijing Aircraft Technology Research Institute Comac Beijing 102211P.R.China

In order to analyze the proposed method,this paper takes the cockpit as the complex system,since the traditional cockpit design evaluation method can set up an actual engineering *** this method can realize the accurate evaluation of the internal structure layout,control devices,and interface display of the cockpit,it is dif-ficult to make modifications once the production is completed,which is not suitable for multi-scheme comparison and rapid iteration in the early stage of civil aircraft *** this regard,this paper establishes the civil aircraft cockpit physical environment and the corresponding virtual cockpit environment based on the virtual-real matching tech-nology,then proposes a mixed reality simulation evaluation method so as to realize the real-time ergonomic evaluation of the digital human body followed by a real *** results show that this mixed reality simulation evaluation method can effectively improve the evaluation accuracy of cockpit design,ensure the efficiency of multi-scheme comparison and optimization iteration in the early stage of cockpit design.

关键词： Civil aircraft cockpit design mixed reality virtual-real matching ergonomic evaluation